Braiding carrier



Jan. 8 1924.

R. C. RAHM BRAIDING CARRIER Filed Oct. 30, 1922 gwucntoz Fatented Jan.8, i924.

ROBERT CARL EAHM, F WYOMISSING, PENNSYLVANIA, ASSIGNOR T0 BERKS EN-GINEERING- COMFANY INQ, PENNSYLVANIA.

OF READING, PENKSYLVANIA, A CORPORATION OF I BRAIDING CARRIER.

State of Pennsylvania, have invented certain new and useful Improvementsin Braidmg Carriers, of which the following 1s a specification.

My invention relates to braiding carriers,

and my main object is to avoid twisting of the yarn as ordinarilyproduced by the travel of'the carrier about the race-ways. The inventionis fully described in connection with the accompanying drawingsillustrating a complete carrier in preferred form, and the novelfeatures are clearly defined in the subjoined claims.

Fig; 1 is a front elevation of my improved carrier, embodying all thefeatures of my invention.

Fig. 2 is a corresponding partly-sectional side elevation, looking inthe direction of arrow 2, Fig. l; the bobbin being removed, the stopperring shown in lowered position, and the raised position of thebobbin-engaging pawl being indicated.

' Fig. 3 is a top view corresponding with Fig. 2, the bobbinbeingindicated in dotted lines.

Fig. 4 is a cross-sectional View on the line 4l1 ofFig. 2.

Fig. 5 is a diagrammatic view illustrating the automatic adjustment ofthe bobbinholder portion of the carrier relative to the raceway engagingportion.

The usual carrier commonly employed in braiding machines, in itsserpentine'travel about the race-ways, produces a harmful twist to thedelivered yarn, either tightening or loosening the fixed twist thereof,causing noticeable defects in the finished fabric and weakening the yarnto the extent of pro ducing frequent breaking and consequentinterruption in the economic continuous operation of the machine. Myimproved carrier is particularly designed to overcome this twistingaction in a simple manner, and consists, as shown in the drawings, of araceway engaging base portion 5, and a bobbin holder portion freelyrotatable thereon and actuated by a tensioned yarn, as hereinafter fullydescribed, so as to prevent such twists. The base portion 5 may be ofany well known shape to engage in the raceway of the machine and betraversed thereabout by the usual drive gears, though the specific formindicated is particularly applicable to the type of machine shown inggzent No. 1,446,127 issued to me Feb. 20,

The base 5 is formed, as shown, withan upwardly extending central post6, axially apertured at'7, and preferably provided with top and bottomball bearings 8 and 9, for the shaft 11 of the bobbin holder portion 10,so as to carry the latter freely rotatable on said base portion.

The portion 10 is formed with a vertical bobbin-supporting post 15 and aparallel slide-carrying post 16,- both preferably .ec-

centric to the axis of rotation as shown, and the latter having spacedbearing lugs 17 and 18 for a slide rod 22, an'oppositely extendingintermediate guide-eye 19, and a top extension 20 with a yarn-deliveryguideeye 21. 1

The bobbin is carried by post 15, and

it, or its holder, is provided with the usual notched tooth rim 26 forengagement of a latch 27 to regulate its unwinding movement on saidpost. This latch27, as shown, is pivotally mounted at 28 inthe slottedupper end of post 25, and has a rearward extension 29 adapted to overliethe bobbin aperture and limit verticalmovement of the latter due tousual lifting strains imparted by the unwinding yarn. The latch hasaflattened bearing edge 30 for a springpresscd plunger 31 carried in thehollow end of post'15, as shown, to normally position said latch innotch engaging position,

but it'may be forcibly swung into vertical post ahnement, shown indotted lines in Fig.2, to remove or replace a bobbin, the

plunger 31 being depressedby extension 29 and seating on the squared endof the latter to retain the latch in this raised position.

This latch 27 is lifted intermittently in well known manner as the feedof yarn requires, by a yarn tensioning slide 35, having a guide eye 36,and vertically shifted on its slide post 16 into direct lifting actionon the end of said latch, as shown, by the yarn engagement in said eye36 acting against the regulating tension of a spring 23 on rod 22bearing on a rod-engaging extension 38 of said slide. Convenientadjustment of the tension of, spring 23, desirable I manner one or otherof the arms 53 for variations in working requirements, is preferablyprovided for as shown by notches in rod 22 in which the coil springtooth 41 of spring tensioning collar 42 engages; said tooth beingdisengageable by a partial rotary movement of said collar to" free thelatter for vertical adjustment.

To provide for the usual automatic stopping of the machine upon thebreaking of a yarn, I provide a stopper device, preferably for the typeof carrier indicated, in the form of a stop ring as shown, looselystrung upon the post 7 and rotatably carried by the extended rod 22;vertical movement of said ring as imparted by yarn slide 35 beinglimited by rod enlargement 51 movably in bearing lug 18, the upper endthereof forming a seat for spring engaged slide extension 38 and theflanged lower end seating against said lug when rod is fully raised. Theslide 35 normally holds rod 22 and its stop ring 50 in fully raisedposition shown in Fig. 1, but upon a break in the yarn the. spring willdepress this ring to the position shown in Fig. 2 when it will lie in.the path of andv actuate in well known of stop motion actuating rod 5%shown.

The yarn 55 from bobbin 25 passes through fixed guide eye 19 of slidecarrying post 16,. guide eye 36 of yarn slide 35, and delivery eye 21,to the braiding point 56; slide 35 being raised by the pull of the yarnto lift stop ring 50 out of the path of arms 53 by compression of spring23, and the regulated tension of the latter moving said slide to take upslack and actuate latch 27 as required to feed additional yarn for thebobbin as will be readily understood.

The guide eye 21, located eccentric to the axis of rotation of thebearing shaft 11, will effect a turning movement of the bobbin holderportion 10 upon the base portion 5 due to the pull of the tensioned yarnextending therefrom to the braiding point as. clearly seen in Fig. 3 anddiagrammatic Fig. 5 such turning movement preventing twist of the yarnordinarily imparted by the travel of the carrier about'the race-way,particularly occurring in lace braiding machines where carriers mayrotate on the same gear for a number of revolutions. As clearly seen inFig. 5, this pull of the yarn will con stantly turn the freely movablecarrier por tion 10 so that its eccentric eye 21 will be automaticallymaintained in radial alinement with the braiding point 56 and pivotalaxis of bearing shaft 11, irrespective of the turning action imparted tobase portion 5 by the race way engagement of the latter. To effectivelyinsure and increase the turning pull of the yarn, I preferably set thedelivery eye 21, with its aperture arranged approximately at rightangles to the axis of the bobbin, as shown, so that the tensioned yarndue to friction caused by the bend thereof will first naturally swingthe bobbnrcarrier until its eye is in radial alinement.

My improved carrier thus fully described provides in a simple,effective, and automatic manner for continuous feed of yarn underregulated tension, and the positive elimination of yarn twist, insuringin practice, long continued uninterrupted economical operation of themachine, requiring little attention due to breaks, and producing anunimpaired fabric. Yarn changes may be quickly made due to thevertically held latch 27, or, if desired, the entire holder portion 10may be removed and another substituted without disturbing the baseportion 5; and the rotatable stop ring 50 is immediately effective upona yarn break in any position of the holder portion 10.

It will be understood that the base portion 5 may be changed as requiredto suit the particular braiding machine, and modification within thespirit of the claims readily devised, and I do not desire to limitmyself to the specific construction shown and described.

V3 hat I claim is:

1. A braiding carrier comprising a racewayengaging base portion, and a.bobbinholder portion freely rotatable thereon so as to be automaticallypositioned on said base portion by the tension of the yarn eX- tendingfrom the bobbin to the braiding point.

- 2. A braiding carrier comprising a raceway engaging base portion; anda bobbinholder portion freely rotatable thereon and having ayarn-delivery guide-eye located eccentric to its pivotal axis, wherebysaid guide-eye A is automatically maintained in radial alinement withthe braiding point and pivotal axis by the yarn tension.

8. A braiding carrier comprising a raceway engaging base portion, and abobbinholder portion freely rotatable thereon ;'said rotatablebobbin-holder portion having a yarn-delivery guide-eye located eccentricto its pivotal axis and set with its aperture axis approximately atright angles to the axis of the bobbin.

4. A braiding carrier comprising a race way engaging base portion and abobbinholder oortion freely rotatable thereon, said rotatable portioncarrying a. thread-tensioncontrolled slide rod adapted to serve as astop device.

A braiding carrier comprising a race way engaging base portion and abobbinholder portion freely rotatable thereon, said rotatable portioncarrying a thread-tensioncontrolled slide rodwhich is provided with astop ring encircling said base portion.

6. A braiding machine carrier having a fixed post, a notched'rodslidably carried thereby, a yarn-actuated slide with a rodengagingextension and a tensioning spring said rod bearing on said extension,and a thereon bearing on said extension and havtension adjustingspring-engagingcollar 10 ing a notch engaging detent disengageablehaving a spring-pressed notch engaging by a partial rotation thereof.tooth disengageable by a partial rotation of 7 A braiding machinecarrier having a said collar. v fixed post, a notched rod slidablycarried In testimony whereof I aifix my signature. thereby, ayarn-actuated slide with a rod- .engaging extension, a tensioning springon ROBERT CARL RAHM.

